Handheld flashlight

ABSTRACT

A handheld flashlight is provided. The handheld flashlight includes a hollow cylinder having a first end and a second end, wherein the hollow cylinder is configured to receive therein and mount thereon a rechargeable battery; a lamp head, connected the first end of the hollow cylinder and comprising a light source; a window breaker, configured to break windows for emergency vehicular escape; a charging-discharging port, selectively connected to an external power source or an external load; a connection port, selectively connected to positive and negative terminals of a vehicle battery through external cables; and a management circuit, selectively applying power from the battery to the light source, the charging-discharging port, and the connection, and selectively charging the battery from the external power source through the charging-discharging port; wherein the handheld flashlight is of such compact size and low weight as to be suitable for single-handed portable operation by a user.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a continuation of U.S. Application Ser. No. 15/636,138, filed Jun. 2, 2017, which claims the benefit of Chinese Patent Application No. 201620730751.3, filed Jul. 12, 2016 and U.S. Provisional Application No. 62/443,657, filed Jan. 7, 2017, the entire disclosures of which are hereby incorporated by reference.

FIELD

The present subject matter is related to handheld flashlights.

BACKGROUND

People, car and life form a representation of attitude, style and life manner. When increasing number of people are enjoying the life with car, deep care and maintenance of the car are necessary. Besides a USB car charger, Bluetooth, GPS, and recorder, people still need an emergency response device which, in case of emergency in driving, can start their cars, illuminate at night, charge their phones, and function as a self-defense tool in emergency condition.

SUMMARY

The present subject matter discloses a handheld flashlight. The handheld flashlight comprises a hollow cylinder having a first end and a second end, wherein the hollow cylinder is configured to receive therein and mount thereon a rechargeable battery; a lamp head, connected the first end of the hollow cylinder and comprising a light source; a window breaker, configured to break windows for emergency vehicular escape; a charging-discharging port, selectively connected to an external power source or an external load; a connection port, selectively connected to positive and negative terminals of a vehicle battery through external cables; and a management circuit, selectively applying power from the rechargeable battery to the light source, the charging-discharging port, and the connection, and selectively charging the rechargeable battery from the external power source through the charging-discharging port; wherein the handheld flashlight is of such compact size and low weight as to be suitable for single-handed portable operation by a user.

DESCRIPTION OF FIGURES

FIG. 1 is an explored drawing of the flashlight in the subject matter.

In the FIGURE, all parts numbered are as follows: 1—cylinder; 2—mounting cap; 3—lamp base; 4—punch; 5—acrylic translucent lens; 6—lithium battery; 7—management circuit board; 8—metallic case; 9—button; 10—silicone sealing cap; 11—raised edge; 12—rope; 13—light-collecting cup; 14—circuit board; 15—charging-discharging port; 16—connection port; 17—light source.

DETAILED DESCRIPTION

Features and advantages of the general inventive concepts will become apparent from the following detailed description made with reference to the accompanying drawings.

As shown in FIG. 1, the emergency vehicle start power supply device comprises a hollow cylinder 1, a mounting cap 2 sealed at the bottom of the cylinder 1, and a lamp head connected to the top of the cylinder 1. A light source 17 is provided at a position inside the lamp head. The light source 17 contains a super bright LED light for illumination, a signal light for SOS signals, and a flashing light for quick flashing. The lamp head comprises a metallic lamp base 3. One end of the lamp base 3 is in thread connection with the top end of the cylinder 1; while the other end of the lamp base 3 is open ended and is in thread connection with a metallic punch 4. A light-collecting cup 13 and an acrylic translucent lens 5 are positioned in sequence between the lamp base 3 and the metallic punch 4. The light-collecting cup 13 collects, concentrates, and redirects the light emitted from the light source. Alternatively, one end of the lamp base 3 may be in thread connection with a metallic case 8 instead of being in thread connection with the top end of the cylinder 1. The light-collecting cup 13 is made with metal and its surface is plated with silver. The metallic punch 4 is made by using metal-cutting technology. The open end of the lamp base 3 is installed with an acrylic translucent lens 5 for resisting dust and water. After positioning the metallic silver plated light-collecting cup 13 in the lamp base 3, the punch 4 is connected with the light-collecting cup 13, resulting in a set of lamp head system. The advantageous features of the lamp head system are as follows: the light-collecting cup 13 collects and concentrates light, in the meanwhile, introduces the heat from the light source to the lamp base 3, and emits the heat. The punch 4 is also made from metal and connected with the lamp base 3. They work together to dissipate heat, which can effectively improve safety and reliability.

The cylinder 1 is a cylindrical shell formed by fitting two pieces of half cylindrical plastic bases together. A lithium battery 6 and a management circuit board 7 are installed inside the cylinder 1. The lithium battery 6 provides electricity for the light source through the management circuit board 7. The cylinder 1 is sleeved by a metallic case 8 in a way in which the cylinder has an interference fit with the metallic case. As an example, the cylinder 1 is tightly surrounded by the metallic case 8 and is coupled to the metallic case 8 such as through a groove on the cylinder receiving a projection on the metallic case 8. A button 9 is provided on the cylinder 1 wall to control the illumination, and delivers help signals or quick flashing through the management circuit board 7. The button 9 extends upward through the metallic case 8. A rope 12 is attached to the bottom of the cylinder 1, which makes the utility model easy to be carried. In the case of emergency when driving, the LED light can be turned on for illumination through the button 9. the SOS signal light and quick flashing light can be turned on through button 9 in case that people cannot move. Through achieving the emergency illumination and signaling signal for help and quick flashing, rescue teams can find trapped people as quickly as possible. Button 9 is located on the cylinder and close to the lamp head, which meets the requirements of ergonomics and facilitates manual control.

A circuit board 14 is installed inside the cylinder 1. A charging-discharging port 15 and a connection port 16 are provided on the mounting cap 2. There may be more than one ports or interfaces (such as USB interface), so as to obtain more functions, such as for charging more devices. The charging-discharging port can be used for charging and discharging purpose. For example, the lithium battery 6 outputs the electricity power, successfully via the circuit board 14 and charging-discharging port. The lithium battery provides electricity power successfully through the circuit board 14, and connection ports, which are connected to the positive and negative terminals of a vehicle battery or the connectors of the positive and negative terminals of a vehicle battery. A silicone sealing cap 10 is provided on the mounting cap 2 for sealing the charging-discharging port and the connection port. It is important for some time that a communication device can be kept in a normal communication. The communication device can be charged through the charging-discharging port so as to be kept in a normal communication with the outside world. When travelling in the wild, if the vehicle's engine is damaged, its battery is empty, and the vehicle cannot be started, the lithium battery can function as a small power supply source to charge the vehicle battery and start the vehicle, through connecting the connection port to the positive and negative terminals of the vehicle battery. As the vehicle carries with itself a lithium battery as an assistant power source, the vehicle can still drive for several miles to reach a service area or garage for repairing.

The power supply device is designed as being completely enclosed by metal in the external. The metal concerned contains the punch 4, the lamp base 3 and the metallic case 8, which are abutted and fixed with screw threads. The metallic case 8 and the cylinder 1 work together to strengthen the abutting with the lamp base 3. The lithium battery 6 and the circuit boards (the management circuit board 7 and the circuit board 10) are fixed inside through the plastic cylinder 1 and the mounting cap 2. The silicone sealing cap 10 seals the bottom of the cylinder, resisting dust and water.

In view of the many possible embodiments to which the principles of the disclosed invention can be applied, it should be recognized that the illustrated embodiments are only preferred examples of the invention and should not be taken as limiting the scope of the invention. All combinations or subcombinations of features of the foregoing exemplary embodiments are contemplated by this application. The scope of the invention is defined by the following claims. We therefore claim as our invention all that comes within the scope and spirit of these claims. 

1. A handheld flashlight, comprising a hollow cylinder having a first end and a second end, wherein the hollow cylinder is configured to receive therein and mount thereon a rechargeable battery, a lamp head, connected the first end of the hollow cylinder and comprising a light source, a window breaker, configured to break windows for emergency vehicular escape, a charging-discharging port, selectively connected to an external power source or an external load, a connection port, selectively connected to positive and negative terminals of a vehicle battery through external cables, and providing electrical power to start the vehicle, and a management circuit, selectively applying power from the rechargeable battery to the light source, the charging-discharging port, and the connection port, and selectively charging the rechargeable battery from the external power source through the charging-discharging port, wherein the handheld flashlight is of such compact size and low weight as to be suitable for single-handed portable operation by a user.
 2. The handheld flashlight of claim 1, wherein a mounting cap is connected to the second end of the hollow cylinder, the charging-discharging port and the connection port are disposed on the mounting cap.
 3. The handheld flashlight of claim 2 further comprising a sealing cap, disposed on the mounting cap for removably sealing the charging-discharging port and the connection port.
 4. The handheld flashlight of claim 1, wherein the lamp head comprises a lamp base connected to the first end of the hollow cylinder.
 5. The handheld flashlight of claim 4, wherein a light-collecting cup and an acrylic translucent lens are positioned in sequence from the lamp base, the light-collecting cup collects, concentrates and redirects the light emitted from the light source.
 6. The handheld flashlight of claim 1, wherein the window breaker comprises a punch, connected to the lamp head.
 7. The handheld flashlight of claim 6, wherein the punch comprises a raised and wavy edge to assist in breaking windows for emergency vehicular escape.
 8. The handheld flashlight of claim 1, wherein the hollow cylinder comprises two pieces of half cylindrical plastic bases.
 9. The handheld flashlight of claim 1 further comprising a metallic case, having an interference fit outside the hollow cylinder.
 10. The handheld flashlight of claim 1 further comprising the light source comprises a LED light for illumination, a signal light for SOS function, and a flashing light for quick flashing function.
 11. The handheld flashlight of claim 10 further comprising a button, disposed on the hollow cylinder and selecting functions between off, the illumination function, the SOS function, and the quick flashing function.
 12. A handheld flashlight, comprising a hollow cylinder having a first end and a second end, wherein the hollow cylinder is configured to receive therein and mount thereon a rechargeable battery, a lamp head, connected the first end of the hollow cylinder and comprising a light source, wherein the light source comprises a LED light for illumination, a signal light for SOS function, and a flashing light for quick flashing function, a window breaker, configured to break windows for emergency vehicular escape, a charging-discharging port, selectively connected to an external power source or an external load, a connection port, selectively connected to positive and negative terminals of a vehicle battery through external cables, and providing electrical power to start the vehicle, a management circuit, selectively applying power from the rechargeable battery to the light source, the charging-discharging port, and the connection port, and selectively charging the rechargeable battery from the external power source through the charging-discharging port, a metallic case, having an interference fit outside the hollow cylinder, and a button, disposed on the hollow cylinder and selecting functions between off, the illumination function, the SOS function, and the quick flashing function, wherein the handheld flashlight is of such compact size and low weight as to be suitable for single-handed portable operation by a user, 